playing a middle pair out of position 10 ft daily dbl

[hamnegger]

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $40/$80
9 players
Converter

Stack sizes:
hamnegger: $1880
UTG+1: $6885
MP1: $2930
MP2: $2776
MP3: $2830
CO: $1895
Button: $3660
SB: $2240
BB: $1775

Pre-flop: (9 players) hamnegger is UTG with 8[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/spade.gif[/img]
hamnegger calls $80 <font color="aaaaaa">(pot was $120)</font>, 3 folds, <font color="#cc0000">MP3 raises to $240</font>, 4 folds, hamnegger calls $160 <font color="aaaaaa">(pot was $440)</font>.

Flop: 5[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/spade.gif[/img] ($600, 2 players)
hamnegger checks, <font color="#cc0000">MP3 bets $400</font>, hamnegger ?

how do you play this? call 1 bet ? fold?mini-raise? raise a bit more?(keep in mind my stack size)
if the turn is a non 8, 10 or under do i call a second bullet? a third bullet?